Panel



. 24,4 i939. P. ZALKIND M4546 PANEL Filed oct. 19, 1955 3 sheets-sheet 1 lll/lm ATTORNEY Jan. 24, 1939. p ZALKlND 2,144,646

PANEL Filed Oct. 19, 1955 3 lSheets-Sheet @bmp zal/rind ATTORNEY Jan. 24, 1939.

P. ZALKIND PANEL Filed Oct. 19, 1935 3 Sheets-Sheet 3 INVENTOR Patented Jan. 24, 1939 STATES PATENT OFFICE PANEL Philip Zalkind, New York, N. Y.

Application October 19, 1935, Serial No. 45,708

Claims.

My invention relates to panels, and more particularly relates to plug shaped, folding panels made of sheet and/or fibrous material such as corrugated board, container board, liber board,

5 sheet metal and the like.'

My panel comprises a Vsubstantially fiat member provided with an outstanding hollow, plug shaped reinforcing member secured to the periphery of the panel. In the preferred embodiment of my invention, I fold the panel with its peripheral reinforcing member from a single blank of suitably shaped and'scored sheet material.

The hollow outstanding extension which forms the plug, not only greatly increases the strength and rigidity of the panel butalso provides a resilient band forming a part of the panel and a complete boundary for the panel.

Ighave found that a panel constructed according to my invention may be used for many purposes. In my copending application Serial 4No.v

739,962 led August 15, 1934, I have shown my reinforced panel in several modifications applied as a door for a collapsible cabinet, and the present application is a continuation in part of the above mentioned copending application'.

Other uses to which my reinfbrced panel is applicable, are as a top for a collapsible table; as a top for an inexpensive desk; as a cover for a collapsible clothes hamper; as a tight sealing end for a container, such as a dust proof collapsible transfer` file or as an end seal for an icecream shipping container. I recite the above uses as examples only, as my panel in its several modifications may be used for many other purposes. In my several copending applications filed coincidently with this application and entitled: Drawer, S. N. 45,711; Three sided casing, S. N. 45,714; Predetermined bend line, S. N. 45,710;

i0 Container fastening means, S. N. 46,316. I have shown several forms of ling cases and drawer to which the panels ofthe present application may be adapted.

The preferred size and shape of my plug reinforced panel will vary with the particular construction in which it is employed. Thus when it -is used in large horizontal panels such as are required for table and desk tops, the reinforcements will be larger than when it is used as an so end for a dust proof transfer file. Also when used for instance as a table top, the outstanding reinforcements serve principally for their structural strength and rigidity, acting as box girders to carry the load of the panel back to the table r5 supports; while when used as an end for an ice- (Cl. S12- 189) cream container, a dust proof cabinet door, etc., the resilient properties of the reinforcement act to produce a tight seal between the panel and the opening which the panel is designed to close.

Accordingly, certain objects of my invention 5 are to provide a novel construction of a panel sheet material, such as an impervious substance which may be folded for shipment; which has structural strength and rigidity; which may be used as a closure member for` an opening to 10 eectively seal the opening; which has ruggedness to withstand wear and tear; which has a pleasing appearance; and which is inexpensive to construct and transport.

There are numerous other objects of my inven- 15 tion which will become evident in the course of the detailed description which follows in connection with the drawings in which:-

Figure 1 is a developed blank of one form of my invention. 20

Figure 2 is a perspective view, partly broken away, showing the panel from blank of Figure 1.

Figure 3 is a developed blank of a modified form of my panel.

Figure 4 is a perspective view, showing the 25 panel from the blank of Figure 3.

Figure 5 is a developed blank of a corner member for use with the panel of Figure 4.

Figure 6 is an enlarged cross section of the plane 6-6 of Figure 4. 30

Figure 7 is a developed blank of a further modied form of panel.

Figure 8 is a perspective View, partly broken away, of a panel. formed from the blank of Figure 7. 35

Figure 9 is an enlarged cross section on the plane 9--9 of Figure 8 looking in the direction of the arrow.

vFigure l0 is an enlarged cross section on the plane lll- Ill of Figure 8 looking in the direc- 40 tion of the arrow.

Figure 11 is a developed blank of another modification.

Figure l2 is a perspective view, partly broken away, showing the blank of Figure 11 with a base member similar to Figure 14.

Figure 13 is one form of l-,base member for use in connection with the blank of Figure 11.

Figure 14 is another form of base member for 50 use in connection with the blank of Figure 1l.

Figure 15 is an enlarged cross section on line I5-l5 of Fig. 12 showing the blank of Figure 1l combined with the base of Figure 14.

Figure 16 is an enlarged cross section showing a lip or ange around the edge of the panel and y extending outwardly from the hollow reinforcement of the panel. Moreover, in these figures, the blank is so arranged that the edge reinforcements interlock with each other in such a manner that when two of these reinforcements are properly secured, the other two reinforcements are also held in place.

In these figures the blank has the double score lines 31a, 3112; 32a, 32h; 33a, 33h; 35a, 3th; which denne the main panel 35. These double scores are preferably of the type disclosed in my copending application entitled: End fold casing, S. N. 45,713, and filed coincidently with the application. Extending from the main panel are the aps 36, 31, 38, 39, which form the flanges around the panels and the hollow reinforcing members. Each of the flaps is provided with a number of parallel score lines which divide each of the aps into a number of sections. Thus flap l36 has the score lines 3io, 31d, 31e, 31j, which den'e the sections 36a, 3611, 36e, 36d, and 36e. Each of the flaps 31, 38 and 39 are similarly provided with score lines which dene similar sections of the respective flaps. l It will be noted in Figure 7, that the iiap sections 3611, 31a, 38a and 39a terminate in a line at 45 to the score lines and that these 45 lines start at the ends of the double scores which define the main panel 35. Thus when the fiaps are folded over as shown in Figure 8, the sections 36a, 31a, 38a and 33a form a flange around the panel and meet each other in miter joints at the four corners.

The iiap 36 is cut back at the sides starting at section 36h by a distance equal to the thickness of the blank stock, as shown at 36g and 36h. Flap 36 is cut back in a similar manner. Section 36C, which in the folded position is parallel to the panel 35, is provided with slots 362' and 36j of a length equal to the width of sections 3io and 33C, and of any desired width. The purposes or" these slots will be more fully explained later.

Now referring to the flaps 31 and 39 which are like each other and which will be described by referring specifically to flap 33. Flap sections 39h is of the same length as the shorter of the two scores of section 39a. Centered on this section are the sections 33e, 36d, and 39e, the two last mentioned sections being shorter' than section 39h by the widthof section 36e plus the width of section 38e. 'Ihe length of section 33C exceeds l that O 35d 0r 39e by the Width 0f slot 361' plus the width of slot 369', thus providing the extensions 397e and 391 each equal the width of the slots 361' and 36j. The section 39e is provided with the tabs 39m and 3911, preferably of sheet metal, and secured to the flap by means of prongs or rivets. Between the double score line 35a, and 34h, are the two slots 39o and 39p each spaced relative to the center line of the panel the same distance as are the tabs 39m and 3971. These slots are slightly larger than the cross sectional dimensions of the tabs 39m and 33u.

In setting up the panel, the flaps 36 and 38 are first turned` into place on their respective score lines. Then either iiap 3i or fiap 39 is turned into place. The following description is referred to the flap 39, though it could apply in a like manner to the fiap 3i.

When the flap is turned on its score lines the tabs 35m and 39u will enter the slots 39o and 39p respectively. These tabs are then pulled tight which will bring the entire structure into posiopening 5l adapted to register with the handle d6 when the panel is in set up position. Along the edges of sheet 52 are the strips of metal 53 having a predetermined bending line 53 as described in my copending application Serial No. 693,841 led Oct. 16, 1933, and the continuation thereof entitled: Predetermined bend line, S. N. 45,710, and filed coincidently with this application. In assembling'the panel with this base member, the blank im is bent upon its score lines and is superposed upon the base 52. The metal strips 53 are then bent on their` predetermined bending lines 55 as shown in section in Figure 16. Thisxsecurely united the folded blank and the base member to form an integral structure.

When the folded blank 6U is usedk with the base member of Figure 14, as shown in perspective in Figure 12 and in cross section in Figure 15, the handle member 116 may be omitted, even where a handle is required, as the base 55 as shown is provided with the handle 56.

Base member 55 is preferably of construction similar to that of the metal front disclosed in my copending application entitled: Drawer, S. N.

tion, and are then turned over the flange 39al as is clearly shown in Figures 8 and 9.

It will be noted that in this position the end extensions on ap section 39h effectively cover one end of each hollow structure formed by the flaps 36 and 38 and fitting respectively into the cut away portions 36h and 38g previously described. Also the extensions 39k and 391 of section 39e fit into the slots 36g' and 38z' respectively locking over the upstanding portions 36d and 38d at their end where they meet the slots 36jand 3811 The iiap 31 operates in the same manner, so that the entire structure s effectively and simply locked in its set up position by the tabs on members 31 and 39. While two of these tabs are shown on each flap 3l and 39, the number may be varied as required. Thus on a short panel only one tab may be needed, while on a long panel more than two tabs may be required.

On the panels so far described, the reinforcing members have been quadrangular in cross section. In Figure 11, I have shown a form of blank from which a panel having reinforcing members of triangular cross section may be produced. In the iigure Llllrepresents the blank of material having the parallel score lines lila, lllb, dic; 42a, 5212, llc` and the score lines 63a, 43h, 63e; fida, db, lido, perpendicular thereto.

Thescores Lila, 62a, 53a, Ma, define the main panel 35, which may be provided with the handle d6 shown of the type used with my filing drawer and disclosed in my Patent 1,946,516. Extending -from the main panel are thefiaps 57, d8, 59, and 5D. These flaps are divided by their respective score. lines into the sections lla, 51h, die; 38a, $85, 158e; 69a, 3911, 59e; and 50a, 50h, 50c.

The blank of Figure 11 may be used with a base member such as shown in Figure 13 or Figure 14. In Figure 12 there is shown lthe blank of Figure 1l assembled in connection with the base member of Figure 14.v

The base member of Figure 13 comprises a blank of sheet material 52 of the same dimensions as the finished panel. This blank has the 45,711, and led coincidently with this application. It comprises the metal panel 55 having the integral frame 51 drawn from the metal of the ,panel 55. The frame 51 has the opening 58 in the depth of the frame 5l. Flanges 59a and 59C are provided with a slot Sila and 60C respectively for the bent wire handle 56. Around the edges of the panel 55 are the U shaped flanges 61a., Bib, Slc and Bld. Before setting up the assembled panel, these flanges are somewhat openl In setting up the panel in connection with base 55 the blank 40 is bent on its score lines, and section 41C is inserted within flange Gib. Similarly section 49e is inserted within flange Bld. Sections 48e and 50c are then inserted respectively into flanges Sic and Gla. The anges are thenbent down to clinch their respective flap sections as clearly shown in Figure 15. This not only firmly unites the two members into an integrated structure; but also the panel 45 being held against the outstanding edges of flanges 59a and 590 acts to retain the handle 56 in the slots 60a and 80e.

In Figures 17 18, and 19, I have shown a modified form of panel with reinforcing members of triangular cross section, but differing from the panel of Figure 11 in that the blank of Figure 17 forms a complete structure without a separate base member. In this figure l0 represents the blank of material having the parallel score lines 1ra, 1lb, llc, 11d, lle; 12a, 72b, 72e, 12d, 12e; and the score lines 13a, 13b, 73e, 13d, 13e; "Ma, 74h, 14C, 14d, 14e perpendicular thereto.

The double score lines lla, 1lb; 12a, 72b; i3d, 13b; and 14a., 74h define the main panel T5. Extending from the main panel are the fiaps '16, 11, 'i8 and T9. These flaps are divided by their respective score lines into the sections 16a, 1Gb, 76C, 76d; lla, 1lb, llc, lid; etc.

If the panel such as that shown in Figure v17 is to be used as a door it may be provided with the slots Ila, Hb, and tlc for attaching a hinge portion to the door member, with the fastening means for the hinge within the side reinforcing member. The opening iid provides means for mounting a handle within the outer side reinforcement with the handle protruding through the opening lld.

Referring to the flap lil. The section '18a forms a flange as shown in Figures 18 and 19. The section 18h forms the vertical member of the reinforcement, section 18e forms the sloping member; and section 18d forms a reentrant leg, which is preferably of sufficient length to extend between the panel member 'l5 and the flange member lila. Section 18e is provided with extend flaps 'idc' and 18C which are marked off from the section 18e by suitable score lines.

The other flaps IB, il' and 'i9 are similar to flap 18 just described.

As shown the flaps are so cut that the reinforcements when folded into. position meet each other at the corners in a miter joint.

Extending around the edge of the section l5 are the four strips of metal ill), fil, 82, and lili each formed with predetermined bending line 80a, Sla, 82a, and and so secured to the blank l0 that these bending lines are superposed over the double score defining the section l5. As 'shown these predetermined bend-lines are of the type as described in my copending application for Predetermined bend line, S. N. 45,710, herein before referred to.

In setting up the panel, each of the fiaps is bent on the score lines to the position as shown in Figure 18. The metal strips are then turned on their bend line as shown at 82 in the same figure. In the set up position the extend flap 18e is' in contact with the extended flap ille,

thus forming an added seal at the corner. Each of the four corners is thus double sealed in this manner.

Now referring to Figures 20, 21, and 22 there is shown a type of panel similar to that from the blank of Figure 17 except that the outer sec tions of the flaps are turned inwardly toward the center of the panel instead of outwardly toward the flange. Also the auxiliary aps on the sloping portions have been omitted as have the metallic strips along the bending line. Thus the blank 90, of Figure 20 conforms to the blank 1G of Figure 17, except that the end sections 16j, llf, 181, and 19) of the flaps of Figure 20 are trimmed on their edgesto be folded inwardly instead of having the reentrant cut as shown on the outer sections 16d, 11d, 18d, and 19d of Figure 17.

When the blank of Figure 20 is folded into shape as shown in Figure 21, the flap section 16j, Tlf, 18j, 19j, may be secured to the section 15 of the blank by adhesive or other means such as the rivets 9|, shown in Figure 21. If the panelsuch as that shown in Figure 2O is to be used as a door it may be provided with the slots l la, l lb, and l Ic for attaching a hinge portion to the door member, with the fastening means for the hinge within the side reinforcing member. The Opening l ld provi-des means for mounting a handle within the other side reinforcement with the handle protruding through the opening I ld.

While in these forms of panel having a reinforcing member whose section is triangular, I have shown a right triangle whose right angle is toward the outer edge of the panel, it is quite obvious that by minor changes such as would be apparent to one skilled in the art, I can modify the blanks and the resulting panels so that the right angle is toward the center of the panel, or so that none of the angles of the triangle are right angles. Moreover, I can flatten of the apex of the triangle so that the hollow reinforcement is in cross section the form of a trapezoid, or a trapezium,

Thus, in Figures 23 and 24, I have shown a modification of the blank of Figure 20 to form a reinforcement wherein the cross section is that of a trapezoid having the inner wall H100, l (llc, (02C, 103C perpendicular to the walls lb, ld; llb, lUid; |022), lllZd; 11135, ld; and the panel face S9. This trapezoid section, as shown in the Figures 23 and 2li, starts at the edge of the panel, and does not have a flange around the panel as in Figures 20 and 21; but it will be readily understood that such a flange could be provided.

In Figures 25 and 26, I have shown a form of panel similar to that of Figure l1, except that side wings l l [l and l l l made respectively from the flaps lilla, llflb, and lila, lllb of the blank i853. With wings such as are shown at llD and lli, the reinforced panel of the present application may be used with a form of metal facing as shown in my copending application for Drawer, S. N. 45,711, hereinbefore referred to for use as an improved modiflcation of the filing drawer disclosed in my Patent 1,946,516.

In Figure 26, it will be noted at H2 and lili, that the ap lila is cut back into the flap llt and flap i l lb is cut back into ap H5 a distance substantially equal to the thickness of the material. shape, as shown in Figure 25, the flap l lb will be flush with flap Elfi; and flap Mib will be flush with flap I ll'.

It will of course be understood that the other forms which I have shown may be provided with In this way, after the panel is bent into fill side wings in a manner similar to that shown in Figures 25 and 26.

Moreover, it will be further understood that the particular forms described in this application are by way of illustration and that many changes in details may be made without departing from the scope and spirit of my invention as set forth in the attached claims.

Now having clearly described my invention so that it may be readily understood by one skilled in the art, I claim:

1. A panel comprising a blank of sheet material having fold lines along which said blank is manually folded; aps integral with said blank and folded to form reinforcements of hollow construction for said panel, and outwardly protruding flanges from said reinforcements; an outer section on said iiaps forming one surface on said reinforcements parallel to and adjacent the main panel member; said outer section extending within the fold comprising said protruding flange, and means securing the structure in formed posi-` tion.

2. A panel comprising a blank of sheet material having fold lines along which said blank is manually folded; flaps integral with said -blank and folded to form reinforcements of hollow construction for said panel, and outwardly protruding flanges from said reinforcements; an outer 'section on said flaps forming one surface on said reinforcements parallel to and adjacent the main panel member said outer section extending within the fold comprising said protruding flange; and metallic strips secured to the outer edges of said main panel member and bent over said iianges locking the structure in set up position.

3. A panel comprising a blank of sheet material having fold lines along which said blank is manually folded; iiaps integral with said blank and folded to form reinforcements of hollow construction for said panel, and outwardly protruding flanges from said reinforcements; an outer section on said iiaps forming one surface on said 'reinforcements parallel to and within the fold comprising said protruding flange; and metallic strips secured to the outer .edges of said main panel member and bent over said flanges locking the structure in set up position, said metallic strips having a, line of slots along a predetermined fold line for manually folding said strip along said line.

4. A panel formed from a blank of sheet material havingfold lines alongvwhich said blank is manually foldable to form reinforced edges of hollow construction, and flanges in a plane parallel to said panel, exterior of the hollow reinforcements; aps on said blank, scored at intervals to define sections for forming the flanges and the walls of the. hollow reinforced edges; said flanges comprising a double thickness of material in the erected position; and an outer section on said flaps secured between said double walls of said flanges.

5. A panel formed from a blank of sheet material having fold lines along which said blank is manually foldable to form reinforced edges of hollow construction, and flanges in a plane parallel to said panel, exterior of the hollow reinforcements; aps on said blank scored at intervals to define sections for forming the flanges and the Walls of the hollow reinforced edges; said flanges comprising a double thickness of material in the erected position; an outer section on said iiaps secured between said double walls of said flanges; and fastening means on the exterior of said flanges for maintaining the double walls of said anges in parallel relationship with each other.

PHILIP ZALKIND. 

